package com.gollum.aspect;

import com.alibaba.fastjson2.JSON;
import com.gollum.common.annotation.AddOperateLog;
import com.gollum.common.enums.BusinessStatus;
import com.gollum.common.utils.ServletUtils;
import com.gollum.common.utils.StringUtils;
import com.gollum.common.utils.ip.AddressUtils;
import com.gollum.common.utils.ip.IpUtils;
import com.gollum.context.SecurityContext;
import com.gollum.system.domain.response.LoginUser;
import com.gollum.manager.AsyncManager;
import com.gollum.manager.factory.LogAsyncFactory;
import com.gollum.system.domain.model.SysOperLog;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.http.HttpMethod;
import org.springframework.stereotype.Component;
import org.springframework.validation.BindingResult;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.servlet.HandlerMapping;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Collection;
import java.util.Date;
import java.util.Map;
import java.util.Objects;

/**
 * 操作日志切面
 *
 * @author Herther
 * @version 1.0.0
 * @createTime 2022年08月24日 22:59:00
 */
@Aspect
@Component
@Slf4j
public class OperateLogAspect {

    /**
     * 处理完请求后执行
     * @param joinPoint 切点
     */
    @AfterReturning(pointcut = "@annotation(opertionLog)", returning = "jsonResult")
    public void doAfterReturning(JoinPoint joinPoint, AddOperateLog opertionLog, Object jsonResult) {
        handleOperateLog(joinPoint, opertionLog, null, jsonResult);
    }

    /**
     * 保存异常日志
     *
     * @auther: Herther
     * @since 1.0.0
     * @date: 2022/9/16 22:40
     */
    @AfterThrowing(value = "@annotation(opertionLog)", throwing = "e")
    public void doAfterThrowing(JoinPoint joinPoint, AddOperateLog opertionLog, Exception e){
        handleOperateLog(joinPoint, opertionLog, e, null);
    }



    /**
     * 处理日志
     *
     * @auther: Herther
     * @version 1.0.0
     * @date: 2022/8/24 23:02
     */
    @SuppressWarnings("all")
    protected void handleOperateLog(final JoinPoint joinPoint, AddOperateLog opertionLog, final Exception e, Object jsonResult) {
        try {
            // 获取当前的用户
            LoginUser loginUser = SecurityContext.getLoginUser();
            //数据库日志
            SysOperLog operLog = new SysOperLog();
            operLog.setStatus(String.valueOf(BusinessStatus.SUCCESS.ordinal()));
            // 请求的地址
            String ip = IpUtils.getIpAddr(ServletUtils.getRequest());
            operLog.setAddressIp(ip);
            operLog.setRequestUrl(ServletUtils.getRequest().getRequestURI());
            //操作人
            if (Objects.nonNull(loginUser)) {
                operLog.setUsername(loginUser.getUsername());
                //operLog.setDeptName(loginUser.getUser().);
            }
            //失败的情况下
            if (Objects.nonNull(e)) {
                //ByteArrayOutputStream baos = new ByteArrayOutputStream();
                //e.printStackTrace(new PrintStream(baos));
                operLog.setStatus(String.valueOf(BusinessStatus.FAIL.ordinal()));
                operLog.setErrorMsg(StringUtils.substring(e.getMessage(), 0, 2000));
                //baos.close();
            }
            // 设置方法名称
            String className = joinPoint.getTarget().getClass().getName();
            String methodName = joinPoint.getSignature().getName();
            operLog.setMethod(className + "." + methodName + "()");
            // 设置请求方式
            operLog.setRequestMethod(ServletUtils.getRequest().getMethod());
            //操作的设备
            operLog.setOperatorType(ServletUtils.getDeviceType().getValue());
            //设置操作时间
            operLog.setOperatorTime(new Date());
            //操作地点
            operLog.setLocation(AddressUtils.getRealAddressByIP(ip));

            // 处理设置注解上的参数
            getControllerMethodDescription(joinPoint, opertionLog, operLog, jsonResult);
                // 保存数据库
                AsyncManager.me().execute(LogAsyncFactory.saveOperator(operLog));
            }
        catch (Exception exp) {
            // 记录本地异常日志
            log.error("==前置通知异常==");
            log.error("异常信息:{}", exp.getMessage());
            exp.printStackTrace();
        }
    }

    /**
     * 获取注解中对方法的描述信息 用于Controller层注解
     *
     * @param opertionLog 日志
     * @param operLog 操作日志
     * @throws Exception
     */
    public void getControllerMethodDescription(JoinPoint joinPoint, AddOperateLog opertionLog, SysOperLog operLog, Object jsonResult) throws Exception {
        // 设置操作业务类型
        operLog.setBusinessType(opertionLog.businessType().getValue());
        // 设置模块标题
        operLog.setModuleTitle(opertionLog.title());
        operLog.setModuleCode(opertionLog.code());
        // 是否需要保存request，参数和值
        if (opertionLog.hasSaveRequestParam()) {
            // 获取参数的信息，传入到数据库中。
            setRequestValue(joinPoint, operLog);
        }
        // 是否需要保存response，参数和值
        if (opertionLog.hasSaveResult() && StringUtils.isNotNull(jsonResult)) {
            operLog.setJsonResult(StringUtils.substring(JSON.toJSONString(jsonResult), 0, 2000));
        }
    }

    /**
     * 获取请求的参数，放到log中
     *
     * @param operLog 操作日志
     * @throws Exception 异常
     */
    private void setRequestValue(JoinPoint joinPoint, SysOperLog operLog) throws Exception {
        String requestMethod = operLog.getRequestMethod();
        if (HttpMethod.PUT.name().equals(requestMethod) || HttpMethod.POST.name().equals(requestMethod)) {
            String params = argsArrayToString(joinPoint.getArgs());
            operLog.setRequestParams(StringUtils.substring(params, 0, 2000));
        }
        else {
            Map<?, ?> paramsMap = (Map<?, ?>) ServletUtils.getRequest().getAttribute(HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE);
            operLog.setRequestParams(StringUtils.substring(paramsMap.toString(), 0, 2000));
        }
    }

    /**
     * 参数拼装
     */
    private String argsArrayToString(Object[] paramsArray) {
        String params = "";
        if (paramsArray != null && paramsArray.length > 0) {
            for (Object o : paramsArray) {
                if (StringUtils.isNotNull(o) && !isFilterObject(o)) {
                    try {
                        Object jsonObj = JSON.toJSON(o);
                        params += jsonObj.toString() + " ";
                    }
                    catch (Exception e) {
                    }
                }
            }
        }
        return params.trim();
    }

    /**
     * 判断是否需要过滤的对象。
     *
     * @param o 对象信息。
     * @return 如果是需要过滤的对象，则返回true；否则返回false。
     */
    @SuppressWarnings("rawtypes")
    public boolean isFilterObject(final Object o) {
        Class<?> clazz = o.getClass();
        if (clazz.isArray()) {
            return clazz.getComponentType().isAssignableFrom(MultipartFile.class);
        }
        else if (Collection.class.isAssignableFrom(clazz)) {
            Collection collection = (Collection) o;
            for (Object value : collection) {
                return value instanceof MultipartFile;
            }
        }
        else if (Map.class.isAssignableFrom(clazz)) {
            Map map = (Map) o;
            for (Object value : map.entrySet()) {
                Map.Entry entry = (Map.Entry) value;
                return entry.getValue() instanceof MultipartFile;
            }
        }
        return o instanceof MultipartFile || o instanceof HttpServletRequest || o instanceof HttpServletResponse
                || o instanceof BindingResult;
    }

}
